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etnaviv: stop repeatedly resolving an unchanged resource into its scanout prime buffer

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Before resolving a resource into its scanout prime buffer, check that
the prime resource is actually older. If it is not, the resolve is an
expensive no-op, and we better skip it.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
This commit is contained in:
Philipp Zabel 2017-04-12 16:13:36 +02:00 • committed by Christian Gmeiner
parent d7a1f01db3
commit f30aab7696
1 changed files with 4 additions and 1 deletions
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5
src/gallium/drivers/etnaviv/etnaviv_clear_blit.c
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@ -593,8 +593,11 @@ etna_flush_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
{
struct etna_resource *rsc = etna_resource(prsc);
if (rsc->scanout)
if (rsc->scanout &&
etna_resource_older(etna_resource(rsc->scanout->prime), rsc)) {
etna_copy_resource(pctx, rsc->scanout->prime, prsc, 0, 0);
etna_resource(rsc->scanout->prime)->seqno = rsc->seqno;
}
}
void